I have a 100kwh Model X. I plan 120-140 mi range while towing. Typically I find Superchargers are about 120 mi apart and it’s a non issue BUT. If you arrive at a High use Charger at 83%.(Say for example Indio CA) you won’t be able to initiate a supercharging session as your limit is set to 80%, Charging stops, before you can set it higher.
So you decide you can make it...which will result in painful 2 hit level 1 charge because spouse won’t let you drop trailer on freeway to reach supercharger.
So Always plan to arrive with 10% SOC. Wild fires etc can throw a wrench in your travels and you may need to backtrack.
Buy the $550 CHadeMo adapter and practice using it locally. Sign up for PlugShare.
We did 3200 mile trip PDX/LAX/PHX last yeR no probably other than Blythe slow charge. Climbing hills & High winds will make you wish Superchargers we’re spaced closer. If there are no CHADEMO solutions within the route RV parks have 50AMP plugs but throttle back to 26Amps to prevent a feeder breaker no one knows about from tripping. (The breaker at your RV spot won’t be the one that trips...it will be upstream, and maybe locked.)
It’s hard not to pass all those F250 diesels at 75mph, but in California that’s a $481 dollar speeding ticket as towing speed limit is 55mph.
Drafting behind semis and staying at 55mph will serve to get you if the % falls below 14%, but that’s going to be when your going uphill
For printed stats see Tesla Bjorn (Bjorn Nyland). He has a webpage.